项目中需要将表中的数据导出,在网上找了找发现phpexcel蛮好用的.特此分享

PHPEXCEL


<?php

if(!defined('BASEPATH')) exit('No direct script access allowed');
//物资发料单明细
class Read_write{
    /**
     * $name:选择的类型(CSV,EXCEL2003,2007)
     * $titles:标题数组
     * $querys:查询返回的数组 $query->result_array();
     * $filename:保存的文件名称
     */
    function write_Factory($titles,$querys,$filename,$name="EXCEL2003"){

        $CI = &get_instance();
        $filename=mb_convert_encoding($filename, "GBK","UTF-8");

        switch ($name) {
            case "CSV":
                $CI->excel->write_CSV($titles,$querys,$filename);
                break;
            case "EXCEL2003":
                $CI->excel->write_EXCEL2003($titles,$querys,$filename);
                break;
            case "EXCEL2007":
                $CI->excel->write_EXCEL2007($titles,$querys,$filename);
                break;
        }
    }

    /**
     * $name:
     */
    function read_Facotry($filePath,$sql,$sheet=0,$curRow=2,$riqi=TRUE,$merge=FALSE,$mergeCol="B"){
        $CI = &get_instance();
        $name=$this->_file_extend($filePath);
        switch ($name) {
            case "csv":
                $CI->excel->read_CSV($filePath,$sql,$sheet,$curRow,$riqi,$merge,$mergeCol);
                break;
            case "xls":
                $CI->excel->read_2003Excel($filePath,$sql,$sheet,$curRow,$riqi,$merge,$mergeCol);
                break;
            case "xlsx":
                $CI->excel->read_EXCEL2007($filePath,$sql,$sheet,$curRow,$riqi,$merge,$mergeCol);
                break;
        }
        $CI->mytool->import_info("filePath=$filePath,sql=$sql");
    }
    /**
     * 2012-1-14 读取工作薄名称(sheetnames)
     */
    function read_sheetNames($filePath){
        $CI = &get_instance();
        $name=$this->_file_extend($filePath);
        $sheetnames ='';
        switch ($name) {
            case "csv":
                $sheetnames=$CI->excel->read_CSV_Sheet($filePath);
                break;
            case "xls":
                $sheetnames=$CI->excel->read_2003Excel_Sheet($filePath);
                break;
            case "xlsx":
                $sheetnames=$CI->excel->read_EXCEL2007_Sheets($filePath);
                break;
        }
        return $sheetnames;
    }
    //读取文件后缀名
    function _file_extend($file_name){
        $extend =explode("." , $file_name);
        $last=count($extend)-1;
        return $extend[$last];
    }
    //-----------------------------------------------预备保留
    //2011-12-21新增CVS导出功能
    public function export_csv($filename,$title,$datas, $delim = ",", $newline = "\n", $enclosure = '"'){
        $CI = &get_instance();
        $cvs= $this->_csv_from_result($title,$datas,$delim,$newline,$enclosure);
        $CI->load->helper('download');
        $name=mb_convert_encoding($filename, "GBK","UTF-8");
        force_download($name, $cvs);
    }
    /**
     * @param $titles:标题
     * @param $datas:数据
     */
    function _csv_from_result($titles,$datas, $delim = ",", $newline = "\n", $enclosure = '"'){
        $out = '';
        // First generate the headings from the table column names
        foreach ($titles as $name){
            $name=mb_convert_encoding($name, "GBK","UTF-8");
            $out .= $enclosure.str_replace($enclosure, $enclosure.$enclosure, $name).$enclosure.$delim;
        }

        $out = rtrim($out);
        $out .= $newline;
        // Next blast through the result array and build out the rows
        foreach ($datas as $row)
        {
            foreach ($row as $item)
            {
                $item=mb_convert_encoding($item, "GBK","UTF-8");
                $out .= $enclosure.str_replace($enclosure, $enclosure.$enclosure, $item).$enclosure.$delim;
            }
            $out = rtrim($out);
            $out .= $newline;
        }

        return $out;
    }

}
?>
//PHPEXCEL&nbsp;~&nbsp;13KB&nbsp;&nbsp;&nbsp;&nbsp;下载(28)


<?php
/**
 * PHPExcel
 *
 * Copyright (C) 2006 - 2010 PHPExcel
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * @category   PHPExcel
 * @package    PHPExcel
 * @copyright  Copyright (c) 2006 - 2010 PHPExcel (http://www.codeplex.com/PHPExcel)
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
 * @version    1.7.4, 2010-08-26
 */
/** Error reporting */
error_reporting(E_ALL);

date_default_timezone_set ('Asia/Shanghai');

/** PHPExcel */
require_once 'Classes/PHPExcel.php';
require_once 'Classes/PHPExcel/IOFactory.php';
/**
 * 输出到页面上的EXCEL
 */
/**
 * CI_Excel
 *
 * @package ci
 * @author admin
 * @copyright 2011
 * @version $Id$
 * @access public
 */
class CI_Excel
{
    //列头,Excel每列上的标识
    private $cellArray = array(
        1=>'A', 2=>'B', 3=>'C', 4=>'D', 5=>'E',
        6=>'F', 7=>'G', 8=>'H', 9=>'I',10=>'J',
        11=>'K',12=>'L',13=>'M',14=>'N',15=>'O',
        16=>'P',17=>'Q',18=>'R',19=>'S',20=>'T',
        21=>'U',22=>'V',23=>'W',24=>'X',25=>'Y',
        26=>'Z',
        27=>'AA', 28=>'AB', 29=>'AC', 30=>'AD', 31=>'AE',
        32=>'AF', 33=>'AG', 34=>'AH', 35=>'AI',36=>'AJ',
        37=>'AK',38=>'AL',39=>'AM',40=>'AN',41=>'AO',
        42=>'AP',43=>'AQ',44=>'AR',45=>'AS',46=>'AT',
        47=>'AU',48=>'AV',49=>'AW',50=>'AX',51=>'AY',
        52=>'AZ', 53=>'BA', 54=>'BB', 55=>'BC', 56=>'BD', 57=>'BE',
        58=>'BF', 59=>'BG', 60=>'BH', 61=>'BI', 62=>'BJ', 63=>'BK', 64=>'BL');
    private $E2003 = 'E2003';
    private $E2007 = 'E2007';
    private $ECSV  = 'ECSV';
    private $tempName;         //当读取合并文件时,如果第二行为空,则取第一行的名称
    /*********************************导出数据开始****************************************************/
    /**
     * 生成Excel2007文件
     */
    function write_EXCEL2007($title='',$data='',$name='')
    {
        $objPHPExcel=$this->_excelComm($title,$data,$name);
        // Redirect output to a client’s web browser (Excel2007)
        header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=UTF-8');
        header("Content-Disposition: attachment;filename=$name.xlsx");
        header('Cache-Control: max-age=0');

        $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, "Excel2007");
        $objWriter->save('php://output');  //output 允许向输出缓冲机制写入数据，和 print() 与 echo() 的方式相同。
        exit;
    }
    /**
     * 生成Excel2003文件
     */
    function write_EXCEL2003($title='',$data='',$name=''){

        $objPHPExcel=$this->_excelComm($title,$data,$name);
        //Redirect output to a client’s web browser (Excel5)
        header('Content-Type: application/vnd.ms-excel;charset=UTF-8');
        header("Content-Disposition: attachment;filename=$name.xls");
        header('Cache-Control: max-age=0');

        $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');
        $objWriter->save('php://output');

    }
    /**
     * 生成CSV文件
     */
    function write_CSV($title='',$data='',$name=''){
        $objPHPExcel=$this->_excelComm($title,$data,$name);

        header("Content-Type: text/csv;charset=UTF-8");
        header("Content-Disposition: attachment; filename=$name.csv");
        header('Cache-Control:must-revalidate,post-check=0,pre-check=0');
        header('Expires:0');
        header('Pragma:public');
        $objWriter = new PHPExcel_Writer_CSV($objPHPExcel,'CSV');
        $objWriter->save("php://output");
        exit;
    }

    function _excelComm($title,$data,$name){
        // Create new PHPExcel object
        $objPHPExcel = new PHPExcel();
        $objPHPExcel=$this->_writeTitle($title,$objPHPExcel);
        $objPHPExcel=$this->_writeDatas($data,$objPHPExcel);
        $objPHPExcel=$this->_write_comm($name,$objPHPExcel);
        return $objPHPExcel;
    }

    //输出标题
    function _writeTitle($title,$objPHPExcel){
        //表头循环(标题)
        foreach ($title as $tkey => $tvalue){
            $tkey = $tkey+1;
            $cell  = $this->cellArray[$tkey].'1';     //第$tkey列的第1行,列的标识符(a..z)
            // Add some data  //表头
            //  $tvalue=mb_convert_encoding($tvalue, "UTF-8","GBK");
            $objPHPExcel->setActiveSheetIndex(0)->setCellValue($cell, $tvalue);  //设置第$row列的值(标题)
        }
        return $objPHPExcel;
    }
    //输出内容
    function _writeDatas($data,$objPHPExcel){
        //内容循环(数据库查询的返回值)
        foreach($data as $key =>$value) {
            $i = 1;
            foreach ($value as $mkey =>$mvalue){   //返回的类型是array([0]=>array());,所以此处要循环它的value,也就是里面的array

                $rows = $key+2; //开始是第二行
                $mrow = $this->cellArray[$i].$rows;   //第$i列的第$row行
                //   $mvalue=mb_convert_encoding($mvalue, "GBK","UTF-8");
                // print_r($mrow."--->".$mvalue);

                $objPHPExcel->setActiveSheetIndex(0)->setCellValueExplicit($mrow, $mvalue);
                $i++;
            }
        }
        return $objPHPExcel;
    }
    function _write_comm($name,$objPHPExcel){
        // Rename sheet(左下角的标题)
        //$objPHPExcel->getActiveSheet()->setTitle($name);
        // Set active sheet index to the first sheet, so Excel opens this as the first sheet
        $objPHPExcel->setActiveSheetIndex(0);   //默认显示
        return $objPHPExcel;
    }
    /*********************************导出数据结束****************************************************/

    /*********************************读取数据开始****************************************************/

    /**
     * 使用方法,$insertSql:insert xx (x1,x2,x3,x4) value (
     */
    // function _comm_insert($objReader,$filePath,$insertSql,$sheet=2,$curRow=2,$riqi=TRUE){
    function _comm_insert($objPHPExcel,$insertSql,$curRow,$merge=FALSE,$mergeCol='B'){
        $CI = &get_instance();
        $currentSheet = $objPHPExcel->getSheet();//得到指定的激活
        /**取得一共有多少列*/
        $allColumn = $currentSheet->getHighestColumn();
        /**取得一共有多少行*/
        $allRow = $currentSheet->getHighestRow();
        $size=strlen($allColumn);//如果超出Z,则出现不执行下去
        $esql="";

        for($currentRow = $curRow;$currentRow<=$allRow;$currentRow++){
            $sql=$insertSql;
            if($size==2){
                $i=1;
                $currentColumn='A';
                while ($i <= 26) {
                    $address = $currentColumn.$currentRow;
                    $temp=$currentSheet->getCell($address)->getCalculatedValue();
                    $sql.='"'.$temp.'"'.",";
                    $currentColumn++;
                    $i++;
                }
                for($currentColumn='AA';$currentColumn<=$allColumn;$currentColumn++){
                    $address = $currentColumn.$currentRow;
                    $sql.='"'.$currentSheet->getCell($address)->getCalculatedValue().'"'.",";
                }

            }else{
                for($currentColumn='A';$currentColumn<=$allColumn;$currentColumn++){
                    if($merge){//如果是读取合并的值,则判断,如果此行的值为NULL,则把前面的tempName赋值给$temp;
                        if($currentColumn==$mergeCol){//这里先指定从B列的名字开始读取合并了的值。以后遇到不同的再调整。
                            $temp=$currentSheet->getCell($mergeCol.$currentRow)->getCalculatedValue();
                            if(empty($temp)){
                                $temp=$this->tempName;
                            }else{
                                $this->tempName=$temp;
                            }
                        }else{
                            $address = $currentColumn.$currentRow;//getValue()
                            $temp=$currentSheet->getCell($address)->getCalculatedValue();
                        }
                    }else{
                        $address = $currentColumn.$currentRow;//getValue()
                        $temp=$currentSheet->getCell($address)->getCalculatedValue();
                    }
                    $sql=$sql.'"'.$temp.'"'.",";
                }
            }
            $esql=rtrim($sql,",").')';
//echo($esql);
//return;
            $CI->db->simple_query($esql);
        }
    }
    /**
     * $filePath:读取文件的路径
     * $insertSql:拼写的SQL
     */
    function read_EXCEL2007($filePath,$insertSql,$sheet=0,$curRow=2,$riqi=TRUE,$merge=FALSE,$mergeCol="B"){
        $objs=$this->_get_PHPExcel($this->E2007,$filePath,$sheet,$insertSql,$riqi);
        $this->_comm_insert($objs["EXCEL"],$objs["SQL"],$curRow,$merge,$mergeCol);
    }
    /**
     * 读取2003Excel
     */
    function read_2003Excel($filePath,$insertSql,$sheet=0,$curRow=2,$riqi=TRUE,$merge=FALSE,$mergeCol="B"){
        $objs=$this->_get_PHPExcel($this->E2003,$filePath,$sheet,$insertSql,$riqi);
        $this->_comm_insert($objs["EXCEL"],$objs["SQL"],$curRow,$merge,$mergeCol);
    }
    /**
     * 读取CSV
     */
    function read_CSV($filePath,$insertSql,$sheet=0,$curRow=2,$riqi=TRUE,$merge=FALSE,$mergeCol="B"){
        $objs=$this->_get_PHPExcel($this->ECSV,$filePath,$sheet,$insertSql,$riqi,$mergeCol);
        $this->_comm_insert($objs["EXCEL"],$objs["SQL"],$curRow,$merge);
    }
    //--------------------------------读取工作薄信息开始
    /**
     * 读取Excel2007工作薄名称
     */
    function read_EXCEL2007_Sheets($filePath){
        return $this->_get_sheetnames($this->E2007,$filePath);
    }

    /**
     * 读取2003Excel工作薄名称
     */
    function read_2003Excel_Sheet($filePath){
        return $this->_get_sheetnames($this->E2003,$filePath);
    }
    /**
     * 读取CSV工作薄名称
     */
    function read_CSV_Sheet($filePath){
        return $this->_get_sheetnames($this->ECSV,$filePath);
    }
    //--------------------------------读取工作薄信息结束
    /**
     * 2012-1-14  --------------------------
     */
    //读取Reader流
    function _get_Reader($name){
        $reader=null;
        switch ($name) {
            case $this->E2003:
                $reader = new PHPExcel_Reader_Excel5();
                break;
            case $this->E2007:
                $reader = new PHPExcel_Reader_Excel2007();
                break;
            case $this->ECSV:
                $reader = new PHPExcel_Reader_CSV();
                break;
        }
        return $reader;
    }
    //得到$objPHPExcel文件对象
    function _get_PHPExcel($name,$filePath,$sheet,$insertSql,$riqi){
        $reader=$this->_get_Reader($name);
        $PHPExcel= $this->_init_Excel($reader,$filePath,$sheet);
        if($riqi){ //如果不需要日期,则忽略.
            $insertSql=$insertSql.'"'.$reader->getSheetTitle().'"'.",";//第一个字段固定是日期2012-1-9
        }
        return array("EXCEL"=>$PHPExcel,"SQL"=>$insertSql);
    }

    //得到工作薄名称
    function _get_sheetnames($name,$filePath){
        $reader=$this->_get_Reader($name);
        $this->_init_Excel($reader,$filePath);
        return $reader->getAllSheets();
    }
    //加载文件
    function _init_Excel($objReader,$filePath,$sheet=''){
        $objReader->setReadDataOnly(true);
        if(!empty($sheet)){
            $objReader->setSheetIndex($sheet);//读取第几个Sheet。
        }
        return $objReader->load("$filePath");
    }
//-------------------------------2012-1-14
}
/*********************************读取数据结束****************************************************/

    /**
     *  $sql="INSERT INTO ".mymsg::WY_MMB." (dizhi,xingming) VALUES (";
     */
    //先上传再读取文件
    function upByFile($sql, $url, $curRow = 2, $RIQI = true,$merge = FALSE,$mergeCol='B')
    {

        $CI = &get_instance();
        $config['allowed_types'] = '*'; //充许所有文件
        $config['upload_path'] = IMPORT; // 只在文件的路径
        $CI->load->library('upload', $config);

        if ($CI->upload->do_upload()) { //默认名是:userfile
            $data = $CI->upload->data();

            $full_name = $data['full_path']; //得到保存后的路径
            $full_name = mb_convert_encoding($full_name, "GBK", "UTF-8");
            $sheet = $CI->input->post("sheet"); //读取第x列图表
            if (empty($sheet)) {
                $sheet = 0;
            }

            $CI->read_write->read_Facotry($full_name, $sql, $sheet, $curRow, $RIQI,$merge,$mergeCol); //执行插入命令

        }

        $this->alert_msg(mymsg::IMPORT_SUCCESS, site_url($url));
    }

------------------------------导出操作----------------------------------
   //导出指定的表字段
   public function show_export(){
    //-----数据库字段
    $field=implode(",",$this->input->post("listCheckBox_show"));//数据库字段
    //显示名称
    $titleArray=$this->input->post("listCheckBox_field");//显示的字段名称(字段Comment注解名,因为传进来的有些空数组,所以必须过滤)
    $title=array();
    foreach ($titleArray as $key => $value) {
        if (!empty($value)) {
            $title[]=$value;
        }
    }
    //---数据库表名
    $table=$this->input->post("tableName");
    //--数据库表名称(Comment注释)
    $show_name=$this->input->post("tableComment");
    //--导出类型
    $type=$this->input->post("type");

    //--where 年月
    $y_month=$this->input->post("year_month");
    if(!empty($y_month)){
        $where["riqi"]=$y_month;
        $datas=$this->mcom_model->queryByWhereReField($field,$where,$table);
    }else{
        //--写出的数据
        $datas=$this->mcom_model->queryByField($field,$table);
    }

    //---开始导出
    $this->read_write->write_Factory($title,$datas,$show_name,$type);
}